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A comment on Shazam Keeps Your Mac’s Microphone Always On, Even When You Turn It Off. Parent comment

Re:Shazam Keeps Your Mac’s Microphone Always On, Even When Y... by Gys on Tuesday November 15, 2016 @10:21AM (#12958707)
Or put a dummy plug in the headphone plug ? Such that it would activate the headphone mic without supplying audio. Cutting of all wires from an old plug would do.
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Re:Shazam Keeps Your Mac’s Microphone Always On, Even When Y... by pmontra on Wednesday November 16, 2016 @12:04PM (#12968961)
Or a mic with its own volume control. This probably works but it could require writing code to test in on a phone, this is why:

My PC doesn't have a mic plug and the headphone one is only out, no in. With two mics (internal and USB) I can switch among them by software. I'm pretty sure I could do that with an analogue mic.

I wonder if an app could do the same on a phone, switching from the outside dummy mic to the internal one. You'll definitely notice that if you're calling somebody, but if the app only listens when no other app is using the mic, then it's easy to record audio most of the time.

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